Improvement in clapboard-machines



tire.

OSCAR R. KENDALL AND LEMUEL C. KENDALL, OF GROTON, NEW

HAMPSHIRE.

Letters Patent No. 88,306, (lated March 30, 1869.

IMPROVEMENT 1N cLAPBoARD-MACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern.-

Beit known that we, OSCAR R. KENDALL and LEM- UEL C. KENDALL, botlrof Groton, in the county of Grafton, and State of New Hampshire, have invented new and useful Improvements in Glapboard-lvlachines; and we do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon. Y

This invention relates to eert-ain improvements in clapboard and other sawing-machines, and consists mainly in the arrangement ofthe lever which opera-tes the devices for changing the motion of the carriage, the construction being such that it may be automatically actuated by the carriage, or be operated by hand, as may be desired.

The details of construction, and the manner of operation, will be fully described hereinafter.

Figure l represents a plan view of our improved machine, with the carriage removed.

Figure 2, a side elevation of the same, with a portion of the side broken away, to show the manner of adjusting the said frame.

Figure 3, a plan view of the carriage detached, and

Figure y4, a side elevation of the same.

'lhe saine letters refer to identical parts in all the figures of the drawings.

To enable those skilled in the art to which our inven- -tion appertains, to make and use the same, we will now proceed to describe fully its construction and the manner of operating it.

A Arepresent the main frame of the machine, which is strongly put together, in the usual form, and is supported upon the legs A A.

B B represent a track, resting upon the side pieces of the frame, upon which runs the carriage C.

D represents the saw-frame, one end of which is se Vcurely attached to the legs of the frame A, as clearly shown in fig. 2, in such manner, however, as to permit the free end ot' the frame to have a limited motion.

This free end is provided with rack-bars d d, into which meshV gear-wheels e e, upon shaft E, which latter is provided with a ratchet and pawl, c', upon the outside of the frame A, and also has the hand-wheel, or

crank E. This hand-wheel should be marked with lines or iigures, in such manner as to indicate the position ci' the saw-trame by meansof its own position relative to la given point.

\Vithin the saw-frame is hung, in suitable bea-rings, the arbor Dl, upon which is the saw D2.

Upon the arbor D is also the pulley D, from which a belt runs to pulley D* upon a shaft placed at the lower end of the saw-trame.

Di' also represents a pulley, upon same shaft, by means of which motion is communicated from the drum under the mill. By means of these connections, motion is given to the saw when desired.

F represents a cross-bar, placed near the saw, to give stiifness to the frame.

F' represents the saw-guide, which is located before the saw, and is constructed of a curved piece of iron,

`placed a pivot, o1I plug, b2, against which the saw runs.

These pivots may be made ot' round leather or raw hide, and should be, in size, a little larger than the4 holes in the arms, so that, by tightening the screws, they may -be securely held.

G represents a small frame, located upon the out side of the main frame A, at about its centre, in which is hung the gearing for operating the carriage.

Grl represents a large pulley, upon whose shaft, within the frame, is the small gear-wheel .f/,which latter meshesl into the rack of the4 carriage C.

GE represents a small pulley, upon whose shaft is the small gear-wheel gl, which latter engages with the gearwheel g2.

This gear-wheel has, upon the same shaft, within the frame, the gear-wheel g3, which meshes into the rack of carriage C.

p Between these pulleys is thc friction-wheel G3, upon whose shaft, outside of frame G, is the pulley G4, which latter is connected, by belt, with pulley G5, upon a shaft at the back end of the machine. This shaft passes through to the inside of the frame, and is provided with a pulley,` which connects, by means of a belt, with a pulley upon the saw-arbor.

l The inner end of the shaft, upon which friction-wheel Gr3 is located,- has its bearing in an upright` bar, which is pivoted `below the bearing, and is swung from side to side-by'ineans of the lever H, the two being united by a connecting-rod. By moving the lever', when the mill is running, motion is communicated either to thevlarge pulley, G, by which means the carriage is caused to move slowly forward against the saw, or to pulley G2, in which case the carriage will be caused to move rapidly back from the saw.

h represents a stop, which limits' the motion of the lever in one direction, it being limited in the other by coming in contact with the end of frame G.

I I represent standards, rising from frame A, which are provided, at the upper end, with holes, in which play the rods I I.

These rods are provided, at their inner ends, with notches, in which rests the lever H, as shown. These rods have also the springs and adjustable stops t" t.

C represents the carriage, which is provided with the adjustable head-block C, as shown. It has also the rack-barand wheels, arrangedin the ordinary manner.

Upon the side to which the rack-bar is attached, are placed, upon the outside ofthe frame, the pins c c and bloc-lis Cl C, by means of which the lever H isoperated, and the carriage is caused to move automatically back and forth, for, when the advancing carriage reaches the proper point, the pin c strikes the stop t', and force back the rod out of the way of lever H, and, immediately after the latter is struck by the block G2, and.

forced forward. This movement causes the frictionpulley below to bear against the small pulley G2, instead ofthe large pulley, and the carriage is run rapidly back until the pin c strikes the stop 'i' upon the other side, and the block C3 forces the lever in the opposite direction, when the direction of the movement is again changed.

The devices for setting the log for a new nearly the same as ordinarily used.

O represents the stationary spur, and O', the revolving head, between which the log is hung.

lhe latter is operated by the bevel-gear wheels O2 O3, as shown.

Upon the shaft oi' the latter is the ratchet-wheel 0*, as shown, which is actuated by the pawl' o on the weighted and pivoted arm o.

P represents a shoe, attached to an adjustable standard rising from frame A, as shown. rFhis shoe is made of considerable length, say twelve inches in an eighteenfoot machine, so that the same distance ma)l be set off whether the carriage runs back the whole distance or not.

Apin is inserted back of the pivoted arm o', by which means its movement may be regulated. This wheel also may be marked off, so as to indicate the thickness of the board set 0E by a given movement.

The operation of these devices is as follows:

cut are When the carriage has finished its entire backward movement, the upper end of arm o' strikes against the underside of shoe?, and is consequently carried haekward, moving with it'the wheel 0*, by which means the log is revolved more or less, as the case may be. As the carriage moves forward again, the arm o', being cleared from the shoe, naturally assumes an upright position again, thus dra-Wing back the pawl ready for the next movement. From this description, the manner of operating our machine will be easily understood.

The log having been properly adjusted, and the sawframe having been set to cut the desired depth, the mill is put in motion. The entire operation is now automatically performed. The carriage moves forward slowly, and the log is cut. It then runs back rapidly, and the log is adjusted for a new cut. These movements may be continued until the logl is entirely' sawn.

Having thus fully described our invention,

What we claim, and desire to -secure by Letters Patent of the United States, is-

The arrangement of the lever H, rods I', and springs fi, as described, for the 'purpose set forth.

This specification, signed and witnessed, this 16th dav of September, 1868.

OSCAR R. KENDALL.

LEMUEL C. KENDALL. Witnesses:

LUTHER. ELLIoTr, EVA BUTTERFIELD. 

